Q: What is the negative version of the number 15,661,521?
A: -15,661,521
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 15,661,519 | 15,661,520 | 15,661,522 | 15,661,523 |
| -15,661,519 | -15,661,520 | -15,661,522 | -15,661,523 |